I think Max was not planning to come back for a 5th year because he didn't expect to be in the regular rotation. Although he's not a superstar he certainly has helped the team this year. Maybe there will be some reconsideration but since we pretty much get everyone back the roster is going to be crowded next year.
Max is a 6'7" front court player with limited athleticism but he knows his limitations, plays smart and gives great effort. And although he's not tall for this position he has very good strength and knows how to use it. He has been a job to watch play this season and has most certainly helped the team.